insight

The story

1. Proto-Germanic · inherited from*insahtiz“account, narrative, argument”
2. Old English · inherited frominsiht“narrative, argument, account”
3. Middle English · inherited frominsight
4. English todayinsight

From Middle English insight, insiht (“insight, mental vision, intelligence, understanding”), equivalent to in- + sight. Perhaps continuing Old English insiht (“narrative, argument, account”), from Proto-Germanic *insahtiz (“account, narrative, argument”). Compare West Frisian ynsjoch (“insight”), Dutch inzicht (“insight, awareness, view, opinion”), German Low German Insicht (“insight”), German Einsicht (“insight, knowledge, perception, understanding”), Danish indsigt (“insight”), Swedish insikt (“insight”), Icelandic innsýn (“insight”).